Also higher, Western Digital
WDC, -0.15%
advanced 4.5 percent to $8.51 after the storage company approved a $100 million stock repurchase plan.

Shares of Taiwan Semiconductor
TSM, +1.52%,
the world's largest chip foundry, lost 2.3 percent to $9.65.

The Taiwan government intends to sell a T$38.3 billion ($1.2 billion) stake of the company through its Taiwan Development Fund, according to Bloomberg. The sale will reduce the fund's holding to about 4.1 percent from 7.3 percent, as part of a plan to reduce holdings in listed companies.

United Microelectronics
UMC, +1.83%,
another leading Taiwan semiconductor manufacturer, also fell, losing 4.3 percent to $5.15.

Micron Technology
MU, +0.12%,
Infineon Technologies
IFX, +2.78%,
Hynix Semiconductor, and Siemens AG
SI
are all named as defendants in the suit, which was filed in California Superior Court in San Francisco. See full story.

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